SHEAR AND STEVENS: EzrRA MICHENER 557 
lent collection of lichens, with many authentic specimens from 
Tuckerman, who identified most of the material. There are also 
many phanerogams, a good collection of mosses, many of which are 
from Europe, and a few hepatics and algae. 
Although Michener published very little, his contributions to 
botany were considerable. Realizing the limitations of his own 
situation and the impossibility of satisfactorily identifying all the 
species himself he wisely sent his collections for identification to 
the leading authorities on the several groups, and devoted his: own 
energies to collecting and preparing his herbarium. He thus 
secured an authoritative and fairly comprehensive flora of his 
region, and added to the number of known species and to the 
known distribution of species already recognized, a type of botan- 
ical work greatly needed. 
BUREAU OF PLANT INDUSTRY, 
WASHINGTON, D. C 
LITERATURE CITED 
. Berkeley, M. J. Notices of North American Fungi. Grevillea 3: 
33-39. 1872. Continued in many later numbers of the same 
journal. 
. Darlington, William. Agricultural Botany. Philadelphia. 1847. 
A second edition, under the title of ‘‘ American Weeds and Useful 
Plants.’”” New York. 1859. 
Flora Cestrica. 3d ed. Philadelphia. 1853. 
Futhey, J. Smith, & Cope, Gilbert. History of Chester County. 
Philadelphia. 1881. 
Harshberger, J.W. The Botanists of Philadelphia. Philadelphia. 
1899. 
J 
iS] 
$Y 
on 
Hartman, William D., & Michener, Ezra. Conchologia Cestrica. 
Philadelphia. 1874. 
. Michener, Ezra. Manual of Weeds or the Weed Exterminator. 
1872. 
8. —— Autographical notes. Philadelphia. 1893. 
S[harpless],W.P. Dr. Ezra Michener. Friends’ Intelligencer and 
Journal. Friends’ Intelligencer XLIV, Friends’ Journal XV. 
p. 426-427. 1887. Reprinted from the West Chester Repub- 
lican. 
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